Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Colorimetry (C) (1) Gas Chromatography/Mass Spectrometry (GC/MS) (1) Sample Type Blood (1) Serum or Plasma (1) (-) Urine (1) Test Area (-) Exposure (1) Test Category (-) Acids (1) Metals/Elements (1) Other (1) Test Sub-Category Carboxylic Acids (1) Test Test Name 2134U Formic Acid, Urine